Time/Place
This meeting is a hybrid teleconference and IRC chat. Anyone is welcome to join...here's the info:
- Time: 11:00am Eastern Daylight Time US (UTC-4)
- U.S.A/Canada toll free: 866-740-1260, participant code: 2257295
- International toll free: http://www.readytalk.com/intl
- Use the above link and input 2257295 and the country you are calling from to get your country's toll-free dial-in number
- Once on the call, enter participant code 2257295
- IRC:
- Join the #duraspace-ff chat room via Freenode Web IRC (enter a unique nick)
- Or point your IRC client to #duraspace-ff on irc.freenode.net
Attendees
- Adam Wead
- David Wilcox
- Andrew Woods
- Unknown User (escowles@ucsd.edu)
- Michael Durbin
- Robin Dean
- Ed Fugikawa
- Carolyn Cole
- Hector Correa
- Betsy Coleman
- Chris Beer
- Eric James
Agenda
- Introductions
- Update on current status of PSU pilot work
- Discussion of open issue
- Next steps
- ...
Minutes
Introductions
- Andrew Woods
- DuraSpace
- Fedora tech lead
- Esme Cowles
- UCSD
- Working on F4 dev for 1.5-2 years
- David Wilcox
- DuraSpace
- Fedora Product Manager
- Mike Durbin
- UVa
- Working on F4 for a year
- In the Fedora community for many years
- Robin Dean
- Colorado Alliance
- Interested in migrations from F3
- Ed Fugikawa
- Colorado Alliance
- Tech Lead
- Running lots of Fedoras
- Carolyn Cole
- PSU
- Scholar Sphere on F3, moving to F4
- Hector Correa
- PSU
- New to Fedora
- Betsy Coleman
- University of New Hampshire
- Software Developer
- Grant to integrate OpenGeoportal with Fedora 4
- Existing F3 installation
- Chris Beer
- Stanford
- Developer
- Adam Wead
- PSU
- Developer
- Worked at RockHall, built Hydra app
- Migrated Hydra from F3 to F4
- Eric James
- Yale
- Programmer/analyst
- Working on Fedora dev for the past year
PSU beta pilot
- Rolling out ScholarSphere 2.0
- In production for about 3 years
- Migrating to F4
- Using Sufia
Getting Sufia working with F4
- Mostly done
- Justin Coyne moved ActiveFedora to F4
- Descriptive metadata (in XML) moved to RDF properties on nodes
- Can create collections
- File uploading
- Intermediate node creation
- ModeShape requires intermediate nodes for performance reasons
- Andrew Woods: ModeShape Beta 1 (in F4 B3) makes progress toward possibly negating the need for intermediate nodes
- Adam Wead: Using NOIs as IDs. Cut into tuples, each tuple is a node
Versioning
- In F3, versions are persisted in a content data stream
- Need to preserve these versions
- Need to restore previous versions as well
- Michael Durbin: Do you need to preserve the original dates?
- Adam Wead: Yes
- Michael Durbin: Need to do a code change; lastModified date will be the date you import into F4
- Could iterate through old versions, tag each with a date
- Robin Dean: Would dates for all objects be changed on import?
- Michael Durbin: Yes, but this will likely change as we build tools for migrations
- Chris Beer: Using a metadata field for the date might make more sense than the system modified date - that date might already be misleading
- This would also provide more flexibility - you could have a user modified date and a system modified date for example
- Restoring versions: The system creates a new version just before you restore a previous versions
- In F3, does changing a datastream create a new version of the object?
- LastModified date gets updated
- In F4, when you version something, everything below it in the graph also gets versioned
- Lots of flexibility: you can version on every change, or just on particular changes
Auditing
- Sufia conducts audits of repository objects
- Now that F4 can do this, should we take advantage of this functionality?
- Could update batch jobs to call fixity service
- Probably faster
Batch jobs
- Uploaded files added to batches
- Maybe use weak references?
Datastreams
- Need to represent rights metadata in RDF
- Need to decide on an ontology
Actions
- Schedule a monthly meeting
- Andrew Woods will send out a note ahead of Hydra Connect to see if there is a need for a discussion prior to that event
